Actually, it goes away with revving... rev over 1200RPM and the sound is gone... under 1000 RPM and you hear very distinctively... I can role on neutral and hear it if my rpms drop under 1000...
damn this is complicated... I wish some of you guys could hear it but I'm livin' so far away... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='

'> (Canada)....
I'll try to tape the sound and post a link to it.